<?php

/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Log
 * @subpackage Writer
 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Stream.php 20096 2010-01-06 02:05:09Z bkarwin $
 */
/**
 * Zend_Log_Writer_Abstract
 */
// require_once 'Zend/Log/Writer/Abstract.php';
/**
 * Zend_Log_Formatter_Simple
 */
// require_once 'Zend/Log/Formatter/Simple.php';
/**
 *
 * @category Zend
 * @package Zend_Log
 * @subpackage Writer
 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Stream.php 20096 2010-01-06 02:05:09Z bkarwin $
 */
class Zend_Log_Writer_Stream extends Zend_Log_Writer_Abstract {

    /**
     * Holds the PHP stream to log to.
     * @var null stream
     */
    protected $_stream = null;

    /**
     * Class Constructor
     * @param streamOrUrl Stream or URL to open as a stream
     * @param mode Mode, only applicable if a URL is given
     */
    public function __construct ($streamOrUrl, $mode = NULL) {
        // Setting the default
        if ($mode === NULL) {
            $mode = 'a';
        }
        if (is_resource ($streamOrUrl)) {
            if (get_resource_type ($streamOrUrl) != 'stream') {
                // require_once 'Zend/Log/Exception.php';
                throw new Zend_Log_Exception ('Resource is not a stream');
            }
            if ($mode != 'a') {
                // require_once 'Zend/Log/Exception.php';
                throw new Zend_Log_Exception ('Mode cannot be changed on existing streams');
            }
            $this -> _stream = $streamOrUrl;
        } else {
            if (is_array ($streamOrUrl) && isset ($streamOrUrl['stream'])) {
                $streamOrUrl = $streamOrUrl['stream'];
            }
            if ( ! $this -> _stream = @fopen ($streamOrUrl, $mode, false)) {
                // require_once 'Zend/Log/Exception.php';
                $msg = "\"$streamOrUrl\" cannot be opened with mode \"$mode\"";
                throw new Zend_Log_Exception ($msg);
            }
        }
        $this -> _formatter = new Zend_Log_Formatter_Simple ();
    }

    /**
     * Create a new instance of Zend_Log_Writer_Mock
     * @param array|Zend_Config $config
     * @return Zend_Log_Writer_Mock
     * @throws Zend_Log_Exception
     */
    static public function factory ($config) {
        $config = self::_parseConfig ($config);
        $config = array_merge (array('stream' => null, 'mode' => null), $config);
        $streamOrUrl = isset ($config['url']) ? $config['url'] : $config['stream'];
        return new self ($streamOrUrl, $config['mode']);
    }

    /**
     * Close the stream resource.
     * @return void
     */
    public function shutdown () {
        if (is_resource ($this -> _stream)) {
            fclose ($this -> _stream);
        }
    }

    /**
     * Write a message to the log.
     * @param array $event event data
     * @return void
     */
    protected function _write ($event) {
        $line = $this -> _formatter -> format ($event);
        if (false === @fwrite ($this -> _stream, $line)) {
            // require_once 'Zend/Log/Exception.php';
            throw new Zend_Log_Exception ("Unable to write to stream");
        }
    }

}
